https://jestineyong.com Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Mon, 03 Aug 2015 01:58:59 +0000 en-US hourly 1 https://wordpress.org/?v=5.4.19 https://jestineyong.com/hp-2400-scanner-repair/ https://jestineyong.com/hp-2400-scanner-repair/#comments Fri, 21 Nov 2014 14:51:33 +0000 https://www.jestineyong.com/?p=8649                       A customer came to my workshop with his HP 2400 Flatbed Scanner unit stating the problem; while he is scanning anything he is getting some “COLOR BARS” on the scan image. I put one scrap visa card in the scanner and when scanned the […]

The post HP 2400 Scanner Repaired first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/hp-2400-scanner-repair/feed/ 10 https://jestineyong.com/kamikaze-transistor/ https://jestineyong.com/kamikaze-transistor/#comments Mon, 10 Mar 2014 01:54:27 +0000 https://www.jestineyong.com/?p=10350               This story started when I got this HP Scanner and was told that it was rejected by HP repair center. The complaint was that it can’t be powered up. After opening the Scanner I found just two boards. One is the power supply/main board and the other one […]

The post Is Scanner HP 4070 Irrepairable due to Kamikaze Transistor? first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/kamikaze-transistor/feed/ 2